When the USPTO publishes a trademark application in the Official Gazette, any party who believes it would be damaged by the registration has 30 days to file an opposition. If an opposition is filed, the application is suspended and the matter is referred to the Trademark Trial and Appeal Board (TTAB) for resolution as a formal inter partes proceeding.

This post covers what a trademark opposition involves, how the proceeding is structured, and the considerations that typically matter most in the early stages.

What Is a Trademark Opposition?

A trademark opposition is a formal inter partes proceeding before the TTAB in which a third party contests an applicant’s right to register a mark. It is not a court case, but it carries the procedural weight of adversarial litigation.

To file an opposition, a party must have a real interest in the outcome and a reasonable basis for believing the registration would cause it damage. Common grounds include priority of use, likelihood of confusion with an existing mark, and descriptiveness. If the opposition is sustained, the application is refused. If the applicant prevails, the registration issues.

Note: If your trademark is being challenged, understanding whether you are dealing with a Trademark Opposition or Cancellation proceeding is the first step to responding.

The 30-Day Answer Deadline

Once a notice of opposition is filed, the applicant has 30 days to file an answer. Extensions are available by mutual agreement between the parties or by motion. If an extension is granted, that additional time may be used to evaluate the merits of the opposition and assess whether early resolution is worth pursuing before the proceeding advances.

A failure to answer can result in the trademark opposition being sustained by default, meaning the application is refused without any review of the underlying merits.

What the Proceeding Looks Like

After the answer is filed, the proceeding moves through a series of phases set by the TTAB’s scheduling order:

• A discovery period during which both parties can take depositions, serve interrogatories, and request documents
• Trial periods for each party to submit testimony and evidence in support of their respective positions
• A briefing phase in which the parties submit opening and reply briefs
• Final decision by a panel of TTAB judges

The full process typically runs two to three years from filing to decision, though extensions, motions practice, and TTAB workload can affect that timeline in either direction.

What to Think About Early

The most consequential decisions in a TTAB proceeding often come in the first few weeks. Before you commit to litigating the matter to a final decision, consider:

• Whether the opposer has a strong or weak priority position
• Whether your mark and the cited mark are actually likely to cause consumer confusion, applying the relevant DuPont factors
• Whether coexistence or a consent agreement might resolve the dispute without prolonged litigation
• Whether the opposition is motivated by a legitimate trademark concern or is being used as leverage

A trademark opposition is not automatically a problem you have to fight through. Many are resolved through negotiation, consent agreements, or simply by amending the identification of goods and services to reduce overlap. Early evaluation of those options can save significant time and cost.

Working with Counsel

TTAB practice is specialized. The procedural rules, evidentiary standards, and briefing conventions differ from federal court litigation, and mistakes in discovery or trial preparation are difficult to correct after the fact. If you have received a notice of opposition, engaging a trademark opposition attorney promptly gives you the best opportunity to shape the proceeding from the beginning rather than reacting to it.

At Grant Attorneys at Law, we handle Trademark oppositions and cancellations for applicants and petitioners alike. If your application has been challenged, contact us to discuss your options.

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